Yamaha PortaSound PSS-51 Owner's Manual page 51

TROUBLESHOOTING
APPENDICES
SYMPTOM
POSSIBLE CAUSES
SOLUTIONS
Speakers produce a "pop" sound
whenever the POWER is turned ON
or OFF.
Initial electric current flow.
Normal situation
No sound.
MASTER VOLUME is turned down.
Turn up the MASTER VOLUME.
VOICE EFFECT volume is assigned
too low or at "0".
Set the VOICE EFFECT VOL.
higher.
HEADPHONES/AUX. OUT terminal
has a jack inserted.
Remove the jack.
Cannot change the VOICE or the
rhythm STYLE.
The VOICE or STYLE button has
not been pressed first.
Refer to pages 14, 18
Rhythm will not start or no rhythm
Sound.
The ACCOMP. VOL. is turned down.
Refer to page 19.
The [START] button of AUTO
ACCOMPANIMENT is not pressed.
After pressing the [SYNCHRO
START/STOP] button, the appropri-
ate key or keys have not been
played.
AUTO ACCOMPANIMENT will not
function.
You are in normal mode. (Both
fingering modes are off.)
Refer to explanations on pages 20
to 24.
Assign the appropriate FINGERING
mode to obtain AUTO ACCOMPANI-
MENT.
Cannot turn ON the HARMONY
function.
The VECTOR SYNTH is ON.
Turn OFF the VECTOR SYNTH.
| Cannot play the desired chord while
pressing the keys when using AUTO
ACCOMPANIMENT.
May be trying to play a FINGERED
chord in the SINGLE FINGER mode,
or vice versa.
Change the FINGERING mode or
your fingering work.
Abnormal operation not listed above.
Complete lack of control.
The internal microcomputer may
have been affected by static electric-
ity or other factors.
i) Turn the POWER OFF.
ii) While holding the [SINGLE
FINGER] and [FINGERED] but-
tons down at the same time, turn
the POWER ON. This operation is
called "Ail Reset", and returns the
PSS-51 to "Factory" status.
Remember, this operation will
erase ALL the stored data.
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